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One of the most useful features provided by Virtual Machine (VM) technologies is the ability to migrate running OS instances across distinct physical nodes. As a basis for many administration tools in modern clusters and data-centers, VM migration is desired to be extremely efficient to reduce both migration time and performance impact on hosted applications. Currently, most VM environments use the Socket interface and the TCP/IP protocol to transfer VM migration traffic. In this paper, the authors propose a high performance VM migration design by using RDMA (Remote Direct Memory Access).
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